PALO ALTO, Calif. (AP) — New York Mayor Michael Bloomberg used his platform as Stanford University’s commencement speaker on Sunday to lobby for an immigration reform plan that allows foreign students to remain in the United States after they graduate.

Standing before a packed Stanford Stadium on Sunday, Bloomberg noted that about 30 percent of the university’s 5,000 graduates had attended Stanford on student visas, but that many of them without a way to work legally here would return to their home countries to compete with American companies.